40402620553 has 2 divisors, whose sum is σ = 40402620554. Its totient is φ = 40402620552.

The previous prime is 40402620551. The next prime is 40402620607. The reversal of 40402620553 is 35502620404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32590358784 + 7812261769 = 180528^2 + 88387^2 .

It is a cyclic number.

It is not a de Polignac number, because 40402620553 - 2¹ = 40402620551 is a prime.

Together with 40402620551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40402620551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20201310276 + 20201310277.

It is an arithmetic number, because the mean of its divisors is an integer number (20201310277).

Almost surely, 2^40402620553 is an apocalyptic number.

It is an amenable number.

40402620553 is a deficient number, since it is larger than the sum of its proper divisors (1).

40402620553 is an equidigital number, since it uses as much as digits as its factorization.

40402620553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 31.

The spelling of 40402620553 in words is "forty billion, four hundred two million, six hundred twenty thousand, five hundred fifty-three".